PREMag B pH buffer is used to provide alkalinity for all water based systems and is compatible with freshwater, brines, and brine polymer systems. PREMag B pH buffer will dissolve in water as pH drifts in fluids, and raise the pH of an aqueous system to 10.3. PREMag B pH buffer can be safer and less costly to use than caustic soda, especially in drill-in fluids.